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⟦illegible⟧ Light Diffraction It is the spreading of light in areas located behind barriers that stand in its path Diffraction waves: they are cylindrical surfaces of light where the wave fronts passing through are spherical Measuring the wavelength of diffraction If we place a very narrow slit ⟦illegible⟧ monochromatic light falls on it ⟦illegible⟧ Then the light falls on ⟦illegible⟧ ⟦illegible⟧ from its sides ⟦illegible⟧ ⟦illegible⟧ at the peak of reception ⟦illegible⟧ its light intensity is lower ⟦illegible⟧ in the first order and in the second order ⟦illegible⟧ the main fringe and it is called the first order ⟦illegible⟧